Hectographic copying device



Feb. 12, 1952 D. N. GRUNDBERG HECTOGRAPHIC COPYING DEVICE 3 Sheets-Sheet 1 Filed Feb. 18, 1950 6 .R m m H NN W; m -ulll1 mfi T N T m H S M o H D 1952 D. N. GRUNDBERG HECTOGRAPHIC COPYING DEVICE 3 Sheets-Sheet 2 FiledFeb. 18, 1950 FIG. 7

33 FIG. 8.

IN VEN T 0R.

DONALD N. GRU/VDB'ERG B A %M H15 ATTORNEY Feb. 12, 1952 D. N. GRUNDBERG 2,585,311

HECTOGRAPHIC COPYING DEVICE F iled Feb. 18, 1950 3Sheets-Sheet 3 Fla /0.

l2 it \m; I

' H/s ATTORNEY.

Patented Feb. 12, 1952 UNITED STATES PATENT OFFICE HECTOGRAPHIO COPYING DEVICE Donald N. Grundberg, Stoneham, Mass.

Application February 18, 1950, Serial No. 145,033

2 Claims. (01. 101-131) My present invention relates to copying devices, and more particularly to a copying device including a holder adapted to be held in the hand of the user, and by means of which typewritten, hand written, drawn, and like prepared matter, impressed on a master paper in mirror or reverse image, may be utilized to produce a plurality of copies on a card or paper of a size adapted to be held on a base or platen, by the spirit duplication process using an alcohol base fluid.

My present invention further relates to an improved hand operated copying device in which a bed or platen is provided with means for registering and holding a card or sheet of paper in correct position to be engaged duringthe copying operation by a master paper carrying matter in reverse or image form, by a holder held in the hand of the operator, and contacting with the card or sheet of paper by a combined pressing and rocking action.

. An object of my invention is an improved hand operated copying device.

Another object of an improved hand operated device for producing duplicate copies by means of the spirit duplication process using an alcohol base fluid.

Another object is an improved hand operated holder provided with a reservoir for holding a supply of base fluid, and having a fluid distributing roller associated therewith, together with a rocking member carrying a master paper having matter to be duplicated impressed thereon in mirror, or reverse form.

A further object is an improved hand operated holder adapted for association, and in combination with an improved base or platen having means thereon for correctly positioning, registering, and holding the paper to receive the impression from the master paper, and for correctly preliminarily positioning the holder prior to the copying operation.

Other objects and novel features of the construction and arrangement of parts comprising the device will appear as the description of the invention progresses.

A still further object of the invention is an improved hand operated device for producing duplicatecopies from matter impressed in mirror, or reverse image form from an aniline, or other suitable, dye carbon.

. In the accompanyingdrawings:

Figure 1 is a top plan view of the lower member of the master sheet holder, taken on the line ,l-l of Figure 2, and with one. end of the fluid "applying roller shown in section.

Figure 2 is a vertical sectional side view, taken on line 2-2 of Figure l, and with the top member having a fluid holding chamber, or reservoir, formed therein, mounted in position on the lower member.

Figure 3 is an elevational View, looking to the right in Figure 2, and showing, in section taken approximately on the line 3-3 of Figure 2, the means for locking the members of the master sheet holder in closed, or operative, positionwith respect to each other.

Figure 4 is a sectional view, on an enlarged scale, taken on the line 44 of Figure 1, and showing the connection between the fluid holding chamber and the liquid dispensing roller.

Figure 5 is a plan view of the base or platen.

Figure 6 is a side elevational view of the device shown in Figure 5.

Figure 7 is an enlarged sectional view, taken on the line 1-1 of Figure 5, and showing the paper clamping device, and the meansfor correctly positioning the sheet of paper, or other material, on the base or platen.

Figure 8 is a view, similar to Figure 7, but showing the sheet holding means in holding or locked position.

Figure 9 is a perspective view of the complete device, with a master sheet holder resting pn the top surface of the base or platen, and

Figure 10 is a schematic view to illustrate the mode of operating the device.

Referring to the drawings, and particularly to Figures 1 to 4 inclusive, l0 designates a holder, adapted to be held in and operated by one hand of an operator. This holder is comprised of an upper half and a lower half H and I2 respectively. Both halves II and. I2 are substantially rectangular, as viewed in plan, and are hingedly connected together at one end by a shaft I3, and are adapted to be folded into position, as shown in Figure 2 to form a closed unit, the upper and lower faces 14 and I5 respectively of which are rounded to permit the holder to be rocked back and forth on a plane surface.

Preferably the halves ll and I2 are made by stamping from sheet metal of appropriate thickness, and at the meeting edges of the halves, adjacent the end remote from the shaft !3 are provided with interlockingmembers 16. The meeting edges of the halves II and i2 between the locking members 56 and the shaft l3 are cut away, as indicated by the numeral H, to thus provide a better holding surface for holding the device in the hand of the operator.

Within the upper half II is, a diaphrgamjlB defining, with the upper half, a reservoir I9 in which is placed a filling of absorbent cotton or other suitable material. The diaphragm I8 is provided with a filling hole 20 normally closed by a stopper or plug 2|, which may be removed at will to allow entrance of a supply of alcohol base fluid. The end of the diaphragm is formed to define a substantially inverted U-shaped channel 22, spaced .from and partially encircling a base fluid distributing roller 23 freely rotatable on the shaft I3 and extending the width of the holder upper half I I.

In the inverted U-shaped channel 22 is formed a perforation 24 which communicates with the interior of the reservoir I9, and this perforation may be round or elongated as a slot, and of a suitable size to permit adequate flow of the alcohol base fluid to the interior of the inverted U-shaped channel 22. Also the channel 22 houses astriplof. felt 25, the outer surface of which engages with the alcohol .base fluid distributing roller .23 at .all times. The perforation 2 is filled with absorbentcottonor other like suitable material, so that there is an absorbent connection between the absorbent material in the reservoir I9 and the felt strip 25 at all times. There is therefore, aflow of alcohol base fluid to the fluid distributing rollerat all times during the rotation of such roller.

-As stated above, the outer, or'lower surface of .the.lower half I2 of the holder element, as viewed inlFigureZ, is rounded, so as to make it possible to allowarolling or rocking motion to the holder during thecopying operation. Referring to said Figure 2,.there is provided, in the lower half I2, adjacent the base fluid distributing roller 23, a plate 26, the ends of which are secured to the .side .wallsof said lower .half I2. The plate 26, throughoutits length, has its lower surface-as viewedzin FiguresZ and 4-spaced apart from the end of the-arcuate bottom of the lower half I2 to define a narrow slot 21 through which may be slid, or forced, oneend 28 of a master paper 23 .whichhas impressed thereon in mirror image the matter to be duplicated or copied, it being under- .stoodthatsuchmatter is exposed to'view when themaster paper is .placed asabove described.

The paper 29, afterthe end 28 is positioned in .the slotl21, is folded over onto the lower rounded surface of the lower half I2 and the end 30 is folded-over the forward edge 3I of the arcuate bottom of the lower half I2. To faeilitateholdingthe master paper 29 in. position until the inter- .locking members I6 are brought together, I pro vide. an opening 32 in the upper half I I to permit theentrance of the finger of the operator to hold the master paper 29 in position.

Referring now to Figures to 8 inclusive, 33 designates 'a-base or platen, preferably rectangullar in form, and at its right hand end, as viewed 'in"Figures 5 and'fi, is a stop 34 perpendicular to .thelength of "the base or platen. This stop may be made integral with the base or platen 33, or

rcard'or'sheet of paper 31 on which matter is to "be impressed by the characters on the exposed surface of the master paper 29 carried by the holder above described. The width of the plate 36, betweenthe free edge thereof and the screws '35,isgreater than one-half the circumference of the roller 23 in order to ensure a feed of base fluid before it engages with the card or paper 31.

The upper surface of the base or platen 33, beneath the spring plate 36 and parallel to the stop 34 is provided with a groove 38, substantially rectangular in cross-section. In this groove 38 is a bar 39, one end 40 of which extends upwardly and then rearwardly, or to the left, a viewed in Figures 5 to 8 inclusive. fIo correctly position 1. the card or sheet .of paper 31, the extending end 40 is depressed-see Figure 7thus lifting the free edge of the spring plate 36 and permitting the edge of the card or paper'31 to be pushed under the free edge of the spring plate 36 and into engagement with the bar 39. When thus positioned the extending end 40 is releasedsee Figure 8whereupon the free end of the spring plate 36 clamps the edge of the card or paper 31 in position on the upper surface of the base or platen 33.

Assuming the various parts of the device have been assembled as above described, and that a card or sheet of paper is in position on the upper surface of the base or platen 33, the method of operation will be clear from the showing in Figure 10.

The operator grasps the holder by the upper half II and momentarily rests the distributor roller 23 on the spring plate 36 as to line up the holder with respect to the card or paper and the base or platen 33. At this time the holder is in the position A and is to be moved in the direction of the adjacent arrow. While thus held in an upright or slightly tilted position, the holder is drawn along the card or paper 31, and the fluid distributing roller distributes a coating of liquid on the upper expose surface of the card or paper 31. This movement is continued until the'holder engages with the stop '34 at the opposite end of the base or platen, whereupon the holder is lined up with'and in correct position to print. The operator then rotates the holder on the roller 23, as indicated by the arrow B and with a rocking movement, as indicated by the arrows on the part I2, presses the master paper on such segment on the card or paper 31, thus transferring and printing the matter on the master paper onto thecard or paper 31.

This operation may be repeated indefinitely and rapidly, or as long as the supply of alcohol base liquid holds out, and, or, the supply of aniline dye lasts on the master sheet, or as desired.

What I claim is:

1. An improved copying device including a holder adapted to be held in the hand of an operator, said holder comprisinga lower portion and an upper portion hingedly mounted together at one end on a transverse shaft, said upper and lower portions being substantially rectangular in form and hollow, the upper face of the upper portion and the lower face of the lower portion being arcuate in form, a liquid distributing roller rotatably mounted on a transverse shaft at the junction of the upper and lower portions, means on the lower portion for removably securing-a master sheet of material on which may be impressed, with an aniline dye composition, characters to be copied, a reservoir in the upper portion for holding a supply of alcohol solution, and means extending from the reservoir to the liquid distributing roller for feeding a supply of alcohol'liquid to said roller as the roller is rotated.

2. An improved copying device including a holder adapted to be held in the hand of an operator, said holder comprising a lower portion and an upper portion, hingedly mounted together at one end on a transverse shaft, said upper and lower portions being substantially rectangular in form and hollow, the upper face of the upper portion and the lower face of the lower portion being arcuate in form, a liquid distributing roller rotatably mounted on a transverse shaft at the junction of the upper and lower portions, means on the lower portion for removably securing a master sheet of material on which may be impressed, with an aniline dye composition, characters to be copied, a reservoir in the upper portion for holding a supply of an alcohol solution, and absorbent means extending from the reservoir to the liquid distributing REFERENCES CITED The following references are of record in the I file of this patent:

UNITED STATES PATENTS m Number Name Date 1,273,131 Barrett July 23, 1918 2,067,289 Ritzerfeld Jan. 12, 1937 2,159,471 Christianson May 23, 1939 1 7 FOREIGN PATENTS a Number Country Date 481,388 Great Britain Mar. 10, 1938 386,702 Great Britain Jan. 26, 1933 

